tools/perf/ui/hist.c

   1 #include <math.h>
   2 #include <linux/compiler.h>
   3
   4 #include "../util/hist.h"
   5 #include "../util/util.h"
   6 #include "../util/sort.h"
   7 #include "../util/evsel.h"
   8
   9 /* hist period print (hpp) functions */
  10
  11 #define hpp__call_print_fn(hpp, fn, fmt, ...)                   \
  12 ({                                                              \
  13         int __ret = fn(hpp, fmt, ##__VA_ARGS__);                \
  14         advance_hpp(hpp, __ret);                                \
  15         __ret;                                                  \
  16 })
  17
  18 static int __hpp__fmt(struct perf_hpp *hpp, struct hist_entry *he,
  19                       hpp_field_fn get_field, const char *fmt, int len,
  20                       hpp_snprint_fn print_fn, bool fmt_percent)
  21 {
  22         int ret;
  23         struct hists *hists = he->hists;
  24         struct perf_evsel *evsel = hists_to_evsel(hists);
  25         char *buf = hpp->buf;
  26         size_t size = hpp->size;
  27
  28         if (fmt_percent) {
  29                 double percent = 0.0;
  30                 u64 total = hists__total_period(hists);
  31
  32                 if (total)
  33                         percent = 100.0 * get_field(he) / total;
  34
  35                 ret = hpp__call_print_fn(hpp, print_fn, fmt, len, percent);
  36         } else
  37                 ret = hpp__call_print_fn(hpp, print_fn, fmt, len, get_field(he));
  38
  39         if (perf_evsel__is_group_event(evsel)) {
  40                 int prev_idx, idx_delta;
  41                 struct hist_entry *pair;
  42                 int nr_members = evsel->nr_members;
  43
  44                 prev_idx = perf_evsel__group_idx(evsel);
  45
  46                 list_for_each_entry(pair, &he->pairs.head, pairs.node) {
  47                         u64 period = get_field(pair);
  48                         u64 total = hists__total_period(pair->hists);
  49
  50                         if (!total)
  51                                 continue;
  52
  53                         evsel = hists_to_evsel(pair->hists);
  54                         idx_delta = perf_evsel__group_idx(evsel) - prev_idx - 1;
  55
  56                         while (idx_delta--) {
  57                                 /*
  58                                  * zero-fill group members in the middle which
  59                                  * have no sample
  60                                  */
  61                                 if (fmt_percent) {
  62                                         ret += hpp__call_print_fn(hpp, print_fn,
  63                                                                   fmt, len, 0.0);
  64                                 } else {
  65                                         ret += hpp__call_print_fn(hpp, print_fn,
  66                                                                   fmt, len, 0ULL);
  67                                 }
  68                         }
  69
  70                         if (fmt_percent) {
  71                                 ret += hpp__call_print_fn(hpp, print_fn, fmt, len,
  72                                                           100.0 * period / total);
  73                         } else {
  74                                 ret += hpp__call_print_fn(hpp, print_fn, fmt,
  75                                                           len, period);
  76                         }
  77
  78                         prev_idx = perf_evsel__group_idx(evsel);
  79                 }
  80
  81                 idx_delta = nr_members - prev_idx - 1;
  82
  83                 while (idx_delta--) {
  84                         /*
  85                          * zero-fill group members at last which have no sample
  86                          */
  87                         if (fmt_percent) {
  88                                 ret += hpp__call_print_fn(hpp, print_fn,
  89                                                           fmt, len, 0.0);
  90                         } else {
  91                                 ret += hpp__call_print_fn(hpp, print_fn,
  92                                                           fmt, len, 0ULL);
  93                         }
  94                 }
  95         }
  96
  97         /*
  98          * Restore original buf and size as it's where caller expects
  99          * the result will be saved.
 100          */
 101         hpp->buf = buf;
 102         hpp->size = size;
 103
 104         return ret;
 105 }
 106
 107 int hpp__fmt(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
 108              struct hist_entry *he, hpp_field_fn get_field,
 109              const char *fmtstr, hpp_snprint_fn print_fn, bool fmt_percent)
 110 {
 111         int len = fmt->user_len ?: fmt->len;
 112
 113         if (symbol_conf.field_sep) {
 114                 return __hpp__fmt(hpp, he, get_field, fmtstr, 1,
 115                                   print_fn, fmt_percent);
 116         }
 117
 118         if (fmt_percent)
 119                 len -= 2; /* 2 for a space and a % sign */
 120         else
 121                 len -= 1;
 122
 123         return  __hpp__fmt(hpp, he, get_field, fmtstr, len, print_fn, fmt_percent);
 124 }
 125
 126 int hpp__fmt_acc(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
 127                  struct hist_entry *he, hpp_field_fn get_field,
 128                  const char *fmtstr, hpp_snprint_fn print_fn, bool fmt_percent)
 129 {
 130         if (!symbol_conf.cumulate_callchain) {
 131                 int len = fmt->user_len ?: fmt->len;
 132                 return snprintf(hpp->buf, hpp->size, " %*s", len - 1, "N/A");
 133         }
 134
 135         return hpp__fmt(fmt, hpp, he, get_field, fmtstr, print_fn, fmt_percent);
 136 }
 137
 138 static int field_cmp(u64 field_a, u64 field_b)
 139 {
 140         if (field_a > field_b)
 141                 return 1;
 142         if (field_a < field_b)
 143                 return -1;
 144         return 0;
 145 }
 146
 147 static int __hpp__sort(struct hist_entry *a, struct hist_entry *b,
 148                        hpp_field_fn get_field)
 149 {
 150         s64 ret;
 151         int i, nr_members;
 152         struct perf_evsel *evsel;
 153         struct hist_entry *pair;
 154         u64 *fields_a, *fields_b;
 155
 156         ret = field_cmp(get_field(a), get_field(b));
 157         if (ret || !symbol_conf.event_group)
 158                 return ret;
 159
 160         evsel = hists_to_evsel(a->hists);
 161         if (!perf_evsel__is_group_event(evsel))
 162                 return ret;
 163
 164         nr_members = evsel->nr_members;
 165         fields_a = calloc(nr_members, sizeof(*fields_a));
 166         fields_b = calloc(nr_members, sizeof(*fields_b));
 167
 168         if (!fields_a || !fields_b)
 169                 goto out;
 170
 171         list_for_each_entry(pair, &a->pairs.head, pairs.node) {
 172                 evsel = hists_to_evsel(pair->hists);
 173                 fields_a[perf_evsel__group_idx(evsel)] = get_field(pair);
 174         }
 175
 176         list_for_each_entry(pair, &b->pairs.head, pairs.node) {
 177                 evsel = hists_to_evsel(pair->hists);
 178                 fields_b[perf_evsel__group_idx(evsel)] = get_field(pair);
 179         }
 180
 181         for (i = 1; i < nr_members; i++) {
 182                 ret = field_cmp(fields_a[i], fields_b[i]);
 183                 if (ret)
 184                         break;
 185         }
 186
 187 out:
 188         free(fields_a);
 189         free(fields_b);
 190
 191         return ret;
 192 }
 193
 194 static int __hpp__sort_acc(struct hist_entry *a, struct hist_entry *b,
 195                            hpp_field_fn get_field)
 196 {
 197         s64 ret = 0;
 198
 199         if (symbol_conf.cumulate_callchain) {
 200                 /*
 201                  * Put caller above callee when they have equal period.
 202                  */
 203                 ret = field_cmp(get_field(a), get_field(b));
 204                 if (ret)
 205                         return ret;
 206
 207                 if (a->thread != b->thread || !symbol_conf.use_callchain)
 208                         return 0;
 209
 210                 ret = b->callchain->max_depth - a->callchain->max_depth;
 211         }
 212         return ret;
 213 }
 214
 215 static int hpp__width_fn(struct perf_hpp_fmt *fmt,
 216                          struct perf_hpp *hpp __maybe_unused,
 217                          struct perf_evsel *evsel)
 218 {
 219         int len = fmt->user_len ?: fmt->len;
 220
 221         if (symbol_conf.event_group)
 222                 len = max(len, evsel->nr_members * fmt->len);
 223
 224         if (len < (int)strlen(fmt->name))
 225                 len = strlen(fmt->name);
 226
 227         return len;
 228 }
 229
 230 static int hpp__header_fn(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
 231                           struct perf_evsel *evsel)
 232 {
 233         int len = hpp__width_fn(fmt, hpp, evsel);
 234         return scnprintf(hpp->buf, hpp->size, "%*s", len, fmt->name);
 235 }
 236
 237 static int hpp_color_scnprintf(struct perf_hpp *hpp, const char *fmt, ...)
 238 {
 239         va_list args;
 240         ssize_t ssize = hpp->size;
 241         double percent;
 242         int ret, len;
 243
 244         va_start(args, fmt);
 245         len = va_arg(args, int);
 246         percent = va_arg(args, double);
 247         ret = percent_color_len_snprintf(hpp->buf, hpp->size, fmt, len, percent);
 248         va_end(args);
 249
 250         return (ret >= ssize) ? (ssize - 1) : ret;
 251 }
 252
 253 static int hpp_entry_scnprintf(struct perf_hpp *hpp, const char *fmt, ...)
 254 {
 255         va_list args;
 256         ssize_t ssize = hpp->size;
 257         int ret;
 258
 259         va_start(args, fmt);
 260         ret = vsnprintf(hpp->buf, hpp->size, fmt, args);
 261         va_end(args);
 262
 263         return (ret >= ssize) ? (ssize - 1) : ret;
 264 }
 265
 266 #define __HPP_COLOR_PERCENT_FN(_type, _field)                                   \
 267 static u64 he_get_##_field(struct hist_entry *he)                               \
 268 {                                                                               \
 269         return he->stat._field;                                                 \
 270 }                                                                               \
 271                                                                                 \
 272 static int hpp__color_##_type(struct perf_hpp_fmt *fmt,                         \
 273                               struct perf_hpp *hpp, struct hist_entry *he)      \
 274 {                                                                               \
 275         return hpp__fmt(fmt, hpp, he, he_get_##_field, " %*.2f%%",              \
 276                         hpp_color_scnprintf, true);                             \
 277 }
 278
 279 #define __HPP_ENTRY_PERCENT_FN(_type, _field)                                   \
 280 static int hpp__entry_##_type(struct perf_hpp_fmt *fmt,                         \
 281                               struct perf_hpp *hpp, struct hist_entry *he)      \
 282 {                                                                               \
 283         return hpp__fmt(fmt, hpp, he, he_get_##_field, " %*.2f%%",              \
 284                         hpp_entry_scnprintf, true);                             \
 285 }
 286
 287 #define __HPP_SORT_FN(_type, _field)                                            \
 288 static int64_t hpp__sort_##_type(struct perf_hpp_fmt *fmt __maybe_unused,       \
 289                                  struct hist_entry *a, struct hist_entry *b)    \
 290 {                                                                               \
 291         return __hpp__sort(a, b, he_get_##_field);                              \
 292 }
 293
 294 #define __HPP_COLOR_ACC_PERCENT_FN(_type, _field)                               \
 295 static u64 he_get_acc_##_field(struct hist_entry *he)                           \
 296 {                                                                               \
 297         return he->stat_acc->_field;                                            \
 298 }                                                                               \
 299                                                                                 \
 300 static int hpp__color_##_type(struct perf_hpp_fmt *fmt,                         \
 301                               struct perf_hpp *hpp, struct hist_entry *he)      \
 302 {                                                                               \
 303         return hpp__fmt_acc(fmt, hpp, he, he_get_acc_##_field, " %*.2f%%",      \
 304                             hpp_color_scnprintf, true);                         \
 305 }
 306
 307 #define __HPP_ENTRY_ACC_PERCENT_FN(_type, _field)                               \
 308 static int hpp__entry_##_type(struct perf_hpp_fmt *fmt,                         \
 309                               struct perf_hpp *hpp, struct hist_entry *he)      \
 310 {                                                                               \
 311         return hpp__fmt_acc(fmt, hpp, he, he_get_acc_##_field, " %*.2f%%",      \
 312                             hpp_entry_scnprintf, true);                         \
 313 }
 314
 315 #define __HPP_SORT_ACC_FN(_type, _field)                                        \
 316 static int64_t hpp__sort_##_type(struct perf_hpp_fmt *fmt __maybe_unused,       \
 317                                  struct hist_entry *a, struct hist_entry *b)    \
 318 {                                                                               \
 319         return __hpp__sort_acc(a, b, he_get_acc_##_field);                      \
 320 }
 321
 322 #define __HPP_ENTRY_RAW_FN(_type, _field)                                       \
 323 static u64 he_get_raw_##_field(struct hist_entry *he)                           \
 324 {                                                                               \
 325         return he->stat._field;                                                 \
 326 }                                                                               \
 327                                                                                 \
 328 static int hpp__entry_##_type(struct perf_hpp_fmt *fmt,                         \
 329                               struct perf_hpp *hpp, struct hist_entry *he)      \
 330 {                                                                               \
 331         return hpp__fmt(fmt, hpp, he, he_get_raw_##_field, " %*"PRIu64,         \
 332                         hpp_entry_scnprintf, false);                            \
 333 }
 334
 335 #define __HPP_SORT_RAW_FN(_type, _field)                                        \
 336 static int64_t hpp__sort_##_type(struct perf_hpp_fmt *fmt __maybe_unused,       \
 337                                  struct hist_entry *a, struct hist_entry *b)    \
 338 {                                                                               \
 339         return __hpp__sort(a, b, he_get_raw_##_field);                          \
 340 }
 341
 342
 343 #define HPP_PERCENT_FNS(_type, _field)                                  \
 344 __HPP_COLOR_PERCENT_FN(_type, _field)                                   \
 345 __HPP_ENTRY_PERCENT_FN(_type, _field)                                   \
 346 __HPP_SORT_FN(_type, _field)
 347
 348 #define HPP_PERCENT_ACC_FNS(_type, _field)                              \
 349 __HPP_COLOR_ACC_PERCENT_FN(_type, _field)                               \
 350 __HPP_ENTRY_ACC_PERCENT_FN(_type, _field)                               \
 351 __HPP_SORT_ACC_FN(_type, _field)
 352
 353 #define HPP_RAW_FNS(_type, _field)                                      \
 354 __HPP_ENTRY_RAW_FN(_type, _field)                                       \
 355 __HPP_SORT_RAW_FN(_type, _field)
 356
 357 HPP_PERCENT_FNS(overhead, period)
 358 HPP_PERCENT_FNS(overhead_sys, period_sys)
 359 HPP_PERCENT_FNS(overhead_us, period_us)
 360 HPP_PERCENT_FNS(overhead_guest_sys, period_guest_sys)
 361 HPP_PERCENT_FNS(overhead_guest_us, period_guest_us)
 362 HPP_PERCENT_ACC_FNS(overhead_acc, period)
 363
 364 HPP_RAW_FNS(samples, nr_events)
 365 HPP_RAW_FNS(period, period)
 366
 367 static int64_t hpp__nop_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
 368                             struct hist_entry *a __maybe_unused,
 369                             struct hist_entry *b __maybe_unused)
 370 {
 371         return 0;
 372 }
 373
 374 #define HPP__COLOR_PRINT_FNS(_name, _fn)                \
 375         {                                               \
 376                 .name   = _name,                        \
 377                 .header = hpp__header_fn,               \
 378                 .width  = hpp__width_fn,                \
 379                 .color  = hpp__color_ ## _fn,           \
 380                 .entry  = hpp__entry_ ## _fn,           \
 381                 .cmp    = hpp__nop_cmp,                 \
 382                 .collapse = hpp__nop_cmp,               \
 383                 .sort   = hpp__sort_ ## _fn,            \
 384         }
 385
 386 #define HPP__COLOR_ACC_PRINT_FNS(_name, _fn)            \
 387         {                                               \
 388                 .name   = _name,                        \
 389                 .header = hpp__header_fn,               \
 390                 .width  = hpp__width_fn,                \
 391                 .color  = hpp__color_ ## _fn,           \
 392                 .entry  = hpp__entry_ ## _fn,           \
 393                 .cmp    = hpp__nop_cmp,                 \
 394                 .collapse = hpp__nop_cmp,               \
 395                 .sort   = hpp__sort_ ## _fn,            \
 396         }
 397
 398 #define HPP__PRINT_FNS(_name, _fn)                      \
 399         {                                               \
 400                 .name   = _name,                        \
 401                 .header = hpp__header_fn,               \
 402                 .width  = hpp__width_fn,                \
 403                 .entry  = hpp__entry_ ## _fn,           \
 404                 .cmp    = hpp__nop_cmp,                 \
 405                 .collapse = hpp__nop_cmp,               \
 406                 .sort   = hpp__sort_ ## _fn,            \
 407         }
 408
 409 struct perf_hpp_fmt perf_hpp__format[] = {
 410         HPP__COLOR_PRINT_FNS("Overhead", overhead),
 411         HPP__COLOR_PRINT_FNS("sys", overhead_sys),
 412         HPP__COLOR_PRINT_FNS("usr", overhead_us),
 413         HPP__COLOR_PRINT_FNS("guest sys", overhead_guest_sys),
 414         HPP__COLOR_PRINT_FNS("guest usr", overhead_guest_us),
 415         HPP__COLOR_ACC_PRINT_FNS("Children", overhead_acc),
 416         HPP__PRINT_FNS("Samples", samples),
 417         HPP__PRINT_FNS("Period", period)
 418 };
 419
 420 LIST_HEAD(perf_hpp__list);
 421 LIST_HEAD(perf_hpp__sort_list);
 422
 423
 424 #undef HPP__COLOR_PRINT_FNS
 425 #undef HPP__COLOR_ACC_PRINT_FNS
 426 #undef HPP__PRINT_FNS
 427
 428 #undef HPP_PERCENT_FNS
 429 #undef HPP_PERCENT_ACC_FNS
 430 #undef HPP_RAW_FNS
 431
 432 #undef __HPP_HEADER_FN
 433 #undef __HPP_WIDTH_FN
 434 #undef __HPP_COLOR_PERCENT_FN
 435 #undef __HPP_ENTRY_PERCENT_FN
 436 #undef __HPP_COLOR_ACC_PERCENT_FN
 437 #undef __HPP_ENTRY_ACC_PERCENT_FN
 438 #undef __HPP_ENTRY_RAW_FN
 439 #undef __HPP_SORT_FN
 440 #undef __HPP_SORT_ACC_FN
 441 #undef __HPP_SORT_RAW_FN
 442
 443
 444 void perf_hpp__init(void)
 445 {
 446         int i;
 447
 448         for (i = 0; i < PERF_HPP__MAX_INDEX; i++) {
 449                 struct perf_hpp_fmt *fmt = &perf_hpp__format[i];
 450
 451                 INIT_LIST_HEAD(&fmt->list);
 452
 453                 /* sort_list may be linked by setup_sorting() */
 454                 if (fmt->sort_list.next == NULL)
 455                         INIT_LIST_HEAD(&fmt->sort_list);
 456         }
 457
 458         /*
 459          * If user specified field order, no need to setup default fields.
 460          */
 461         if (is_strict_order(field_order))
 462                 return;
 463
 464         if (symbol_conf.cumulate_callchain) {
 465                 hpp_dimension__add_output(PERF_HPP__OVERHEAD_ACC);
 466                 perf_hpp__format[PERF_HPP__OVERHEAD].name = "Self";
 467         }
 468
 469         hpp_dimension__add_output(PERF_HPP__OVERHEAD);
 470
 471         if (symbol_conf.show_cpu_utilization) {
 472                 hpp_dimension__add_output(PERF_HPP__OVERHEAD_SYS);
 473                 hpp_dimension__add_output(PERF_HPP__OVERHEAD_US);
 474
 475                 if (perf_guest) {
 476                         hpp_dimension__add_output(PERF_HPP__OVERHEAD_GUEST_SYS);
 477                         hpp_dimension__add_output(PERF_HPP__OVERHEAD_GUEST_US);
 478                 }
 479         }
 480
 481         if (symbol_conf.show_nr_samples)
 482                 hpp_dimension__add_output(PERF_HPP__SAMPLES);
 483
 484         if (symbol_conf.show_total_period)
 485                 hpp_dimension__add_output(PERF_HPP__PERIOD);
 486 }
 487
 488 void perf_hpp__column_register(struct perf_hpp_fmt *format)
 489 {
 490         list_add_tail(&format->list, &perf_hpp__list);
 491 }
 492
 493 void perf_hpp__column_unregister(struct perf_hpp_fmt *format)
 494 {
 495         list_del(&format->list);
 496 }
 497
 498 void perf_hpp__register_sort_field(struct perf_hpp_fmt *format)
 499 {
 500         list_add_tail(&format->sort_list, &perf_hpp__sort_list);
 501 }
 502
 503 void perf_hpp__column_enable(unsigned col)
 504 {
 505         BUG_ON(col >= PERF_HPP__MAX_INDEX);
 506         perf_hpp__column_register(&perf_hpp__format[col]);
 507 }
 508
 509 void perf_hpp__column_disable(unsigned col)
 510 {
 511         BUG_ON(col >= PERF_HPP__MAX_INDEX);
 512         perf_hpp__column_unregister(&perf_hpp__format[col]);
 513 }
 514
 515 void perf_hpp__cancel_cumulate(void)
 516 {
 517         if (is_strict_order(field_order))
 518                 return;
 519
 520         perf_hpp__column_disable(PERF_HPP__OVERHEAD_ACC);
 521         perf_hpp__format[PERF_HPP__OVERHEAD].name = "Overhead";
 522 }
 523
 524 void perf_hpp__setup_output_field(void)
 525 {
 526         struct perf_hpp_fmt *fmt;
 527
 528         /* append sort keys to output field */
 529         perf_hpp__for_each_sort_list(fmt) {
 530                 if (!list_empty(&fmt->list))
 531                         continue;
 532
 533                 /*
 534                  * sort entry fields are dynamically created,
 535                  * so they can share a same sort key even though
 536                  * the list is empty.
 537                  */
 538                 if (perf_hpp__is_sort_entry(fmt)) {
 539                         struct perf_hpp_fmt *pos;
 540
 541                         perf_hpp__for_each_format(pos) {
 542                                 if (perf_hpp__same_sort_entry(pos, fmt))
 543                                         goto next;
 544                         }
 545                 }
 546
 547                 perf_hpp__column_register(fmt);
 548 next:
 549                 continue;
 550         }
 551 }
 552
 553 void perf_hpp__append_sort_keys(void)
 554 {
 555         struct perf_hpp_fmt *fmt;
 556
 557         /* append output fields to sort keys */
 558         perf_hpp__for_each_format(fmt) {
 559                 if (!list_empty(&fmt->sort_list))
 560                         continue;
 561
 562                 /*
 563                  * sort entry fields are dynamically created,
 564                  * so they can share a same sort key even though
 565                  * the list is empty.
 566                  */
 567                 if (perf_hpp__is_sort_entry(fmt)) {
 568                         struct perf_hpp_fmt *pos;
 569
 570                         perf_hpp__for_each_sort_list(pos) {
 571                                 if (perf_hpp__same_sort_entry(pos, fmt))
 572                                         goto next;
 573                         }
 574                 }
 575
 576                 perf_hpp__register_sort_field(fmt);
 577 next:
 578                 continue;
 579         }
 580 }
 581
 582 void perf_hpp__reset_output_field(void)
 583 {
 584         struct perf_hpp_fmt *fmt, *tmp;
 585
 586         /* reset output fields */
 587         perf_hpp__for_each_format_safe(fmt, tmp) {
 588                 list_del_init(&fmt->list);
 589                 list_del_init(&fmt->sort_list);
 590         }
 591
 592         /* reset sort keys */
 593         perf_hpp__for_each_sort_list_safe(fmt, tmp) {
 594                 list_del_init(&fmt->list);
 595                 list_del_init(&fmt->sort_list);
 596         }
 597 }
 598
 599 /*
 600  * See hists__fprintf to match the column widths
 601  */
 602 unsigned int hists__sort_list_width(struct hists *hists)
 603 {
 604         struct perf_hpp_fmt *fmt;
 605         int ret = 0;
 606         bool first = true;
 607         struct perf_hpp dummy_hpp;
 608
 609         perf_hpp__for_each_format(fmt) {
 610                 if (perf_hpp__should_skip(fmt, hists))
 611                         continue;
 612
 613                 if (first)
 614                         first = false;
 615                 else
 616                         ret += 2;
 617
 618                 ret += fmt->width(fmt, &dummy_hpp, hists_to_evsel(hists));
 619         }
 620
 621         if (verbose && sort__has_sym) /* Addr + origin */
 622                 ret += 3 + BITS_PER_LONG / 4;
 623
 624         return ret;
 625 }
 626
 627 void perf_hpp__reset_width(struct perf_hpp_fmt *fmt, struct hists *hists)
 628 {
 629         int idx;
 630
 631         if (perf_hpp__is_sort_entry(fmt))
 632                 return perf_hpp__reset_sort_width(fmt, hists);
 633
 634         for (idx = 0; idx < PERF_HPP__MAX_INDEX; idx++) {
 635                 if (fmt == &perf_hpp__format[idx])
 636                         break;
 637         }
 638
 639         if (idx == PERF_HPP__MAX_INDEX)
 640                 return;
 641
 642         switch (idx) {
 643         case PERF_HPP__OVERHEAD:
 644         case PERF_HPP__OVERHEAD_SYS:
 645         case PERF_HPP__OVERHEAD_US:
 646         case PERF_HPP__OVERHEAD_ACC:
 647                 fmt->len = 8;
 648                 break;
 649
 650         case PERF_HPP__OVERHEAD_GUEST_SYS:
 651         case PERF_HPP__OVERHEAD_GUEST_US:
 652                 fmt->len = 9;
 653                 break;
 654
 655         case PERF_HPP__SAMPLES:
 656         case PERF_HPP__PERIOD:
 657                 fmt->len = 12;
 658                 break;
 659
 660         default:
 661                 break;
 662         }
 663 }
 664
 665 void perf_hpp__set_user_width(const char *width_list_str)
 666 {
 667         struct perf_hpp_fmt *fmt;
 668         const char *ptr = width_list_str;
 669
 670         perf_hpp__for_each_format(fmt) {
 671                 char *p;
 672
 673                 int len = strtol(ptr, &p, 10);
 674                 fmt->user_len = len;
 675
 676                 if (*p == ',')
 677                         ptr = p + 1;
 678                 else
 679                         break;
 680         }
 681 }